anderson



E. C. ANDERSON.

Lock BOLT. APPLICATION FILED fEB. I3. I9IB.

E. C. ANDERSON.

LOCK BOLT.

APPLICATION FILED FEB. I8 IQIB.

1,308,026. Patented July 1,

SSHEETS-SHEE I Il ll 1 l I 1 A I E. C. ANDERSON.

Lock BOLT. v APPLICATION P ILED FEB. I8. |918.

1,308,026. Pat dJu1y1,1919.

-sHEELT a.

EETS.

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Specficitn df Letters Patent.

applicati@ mea February 1s, 19:13. serial Np. 217,972.

To all whom t may concerm f 1 .Be it known that I, EMIL C. ANDERSON, a citizen of the United States, residing in the city of Denver, county of Deliver, and State `of Colorado',have invented certain'new and useful Improvements Vin Lock- Bolts, which the following is la description;`

My inventiony belongs to thatgeneral class of devices adapted to soengage a bolt and its coperating `screw-threaded nut" that the .two are substantially locked together 1 and are not likely to becomeaccidentally"disenf M gaged. It has for its object a yery `effective construction of a deviceof the class "referred to which may be constructed at lslight cost and may be `used againand again `without locking feature. Y

in anyway affectingl the efiiciencyfofmthe To this end `my invention consists in the` novel construction, arrangement l and" combination of parts herein `sl`1own` and described" particularly spointed out "in"` the" and more claims. a i a a In the drawings, wherein like reference characters indicate like or 'corresponding parts, n Y; i Figure 1 illustratesan end view of `one form of my improvedboltWith the ooper` ating parts in place in position thereon i Fig. 2 is a perspective view-of adetachable washer adapted to be placedfupon end of the bolt inthe form shown;

Fig. 3 isa perspective vievvfofthe part coperating with; thevvasher shwirin Fig. 2, bytheoperatiOn ofwhichfthe bolt is elfectually locked to a 'nutplacedthereong Fig. 4 is a longitudinal section throu'glra part of a bolt of the form shovyvn` with the coperating parts placed in positioir thereon and a nut mounted upon the bolt y w" Fig. 5 is a similar section, showing" the Within the nut; i i

Fig. `6 is an enlarged sectional: viewmore clearly illustrating the locking action locking member retracted to lockthe lbolt Fig. 7 is a central longitudinal section of the end Iof va bolt illustrating a modiiication,

the parts bein-g placed together in position for threading the nut shown thereon Fig. 8 is a diagrammatic view showing the end of the bolt with the guiding stem, the cam washer and the cam locking'inember for the preferred form illustrated in Fig.` 7;

' Fig.` 9 `is a top planview of aboltvvith" the guiding stein, having a nut locked thereon by my improved method and means;

Fig. 10` is a side elevation of a slightly modified form in which the cam face is formed integrally upon the end of the bolt; Fig. 11 is a section showing a nut mounted in the form shown in Fig. 10; y

Fig. 12 `is a section showing an ordinary bolt Without a guiding stem thereon formed to embody my invention; and y "Fig 13 is a section showing a modified form. e

Inthe `drmvingsg 1 illustrates the free end of a threaded bolt preferably having formed thereon aneXtended guiding stem 2. An upward extension 3 is inthe form shown either rectangularorI other form adapted for the reception of a suitable coperating washer thereon' and to 1 prevent' the rotation of thewasher on the stein or the end of the bolt. l is a" camfaced vwasher adapted to illustrated. 7is a coperating part or follower `of substantially the same diameter as thebolt and correspondingly threaded. n It is `providedon its lower face with a co` operating cani 8 with a coperating shoulder 9. fAn opening l0 through the partis adaptedfto be loosely and rotatably mounted on the guiding and retaining stem 2, the washer t lifting said part above the square shoulder 3 to permit such rotation` The upper face of the` part 7 isprovided with any suitable or preferred constructionll adapted for the engagement of a tool so that said part may belrotated:4 12 isa nut of any preferred external,forni` adaptedto be screwed upon the end `ofthe bolt."` y y y Ars thus described, the cam washer 4 is pla'ced upon the end of the bolt, the opening fthere'of engaging the shoulder 3 so as 1 to preventtherotation of the Washer upon the bolt, The part 7 is then loosely placed upon the cam with the shoulder 9 in" contact with the `shoulder 6 ofthe washer.` Thile in this position `the nut 12 `inay be readily threaded upon the bolt to the point desired,

but should notf be screwed down sufiiciently far to disengage the threads of the part 7 from the nut. y Then the nut is' properly set down, a tool may `befapplied to the part 11 ratentedauiy 1, 1919.

and the parte? forcibly retracted', the'eams faces on the Washer and said art servin0` to so force the'part 7 longitudinally that the Fig. 6. y U When it 1s desired to remove the nut 1t will be necessary Vtoagam place thetoolupon y the part 11 and turn the same'fonward;again,

bringing the shoulder 9 in contact with the shoulder` @von the -yv-asher.v ThisA unlocks the bolt fromy the nut, and the nut may7 their backedL off from the holt?, provided care isv taken to4 prevent. the par-t. T rotating.-

thereivitlrl. Any preferred meansmayz he-y employed'to prevent this.. As showniin-the drawings, I for-nn a pinhole 13 through the Washer 4andr av corresponding. pinholey 14 through :the part 7 y the two being; soa\r. ranged that when the shoulders .9. andl Gare in. contact the holes lfandf 14:. will register.

A pin'l, clearly shown in Fig. 7, may their.

be loosely placed through both the parts,

sufci ently lockingf .them y together andz pre.-l

venting` therotation: the said part 7.. In this position the nut may as readily beremoved fromy the bolt as though. nolock-ing means were employed.

stem'fhaving a shoulder. 3 formed thereon,

itisround. or turned softh'at a Washer placed l thereon Wouldreadll-v rotate thereabout; 1n

order to lock the Washer whichy I have marked 16 upon' the bolt,.a1pinhole 1,-7- isformed through the washer andi a coperating' pinhole 1.9 formed in the'y face ofthe shoulder or end of the bolla/.as indicated,.and

a: pin318y placed therein serves to lock the Washer against rotatioirrqponthe bolt as Ybefore.;l yThe operation isothe' tially the same as.describedi l have indi'- cated the hole in thewasher for the reeepf tiony of, thepin lfby the numeral 20 and. the

corresponding holev through the part 7i byv thenumeral 21'.. t

As shownin Figs-.110, and 111, instead of using a Washera cam-faced eXtensionQQJ is formed. integrally' upolr the end of the holt;

increase the convenience of assembling the parts. The means employed to prevent therotation of the Washer ony the end of the bolt` and; to temporarily engage the follower and Washer. While removing the nut, is substan` tially the same as shown in Figs. 7 and S.

Inv Fig. 13 a reversal of the'parts is shown in which the bolt I1 is recessed` as at 23 for.

he reception of a guiding stem 24 depend- Inthe ferm shown in- Figs. 7,.'8 and.9,.1n place ofi the guiding ise subst-afm-v ing. fromthe follower 2l, Registering apertures are formed in the follonier and end o1" .the boltgfor the reception of the locking pin threads thereof are locked in 'frictional' con- `asshown Thepiinhowever, is necessarily tact with the nut as clearly illustrated.. 1n

.K only .used when the nut is to be removed lo conveniently prevent the cam follower back 'ing and thus preventing the disconnection ofi't'lieparts. The operation is suhstantiallv the same.. Obviously the end 'of the bolt may be straight and a cam washer similar to that shown inl? ig. 2 employed, as in the other form.

It is' obvious that the nut may be removed and rengagedany number of times Without destroying the efficiency ofI the locking means.A 1

HavingA thus. described my. invention and itsmethod ofv operation, L do not wish to be understood as limiting myself to the exact construction. shown,.there being various modiiieations that couldi be employed and that. will: readily. occur to the skilled mechanic..

lVhatI'. claim as new and desire to secure by LetterslPatent is:.-

11. A1 l'oekrbolt comprising a holt reduced at the threaded end toI form a. projecting guiding stem, the annular face about the stem provided with: a shoulderedy cam face, in combination. with a cooperating4 part oi. a diameter corresponding tathat of the holt and similarly screwethrea ded; provided with a coperating and shouldered cam face an'l. a: cooperating; part for the guiding stem, and meansfor engaging ai tool with said part to rotate the same.

2... A lock-bolt comprising.- ai bolt reduced at the-y threaded end! to' form a projecting guiding stemnnd providing'an annular face about the stem,.a\. cam faced Washer adapted to: rest. upoir said shoulder,. in combinatimr with a co'perating part of a diameter corresponding With the bolt and similarly scre\v-threaded, said.r part provided with a cam; face. cooperating withthat of the Washer. yandi an! epening for theguiding stem, and means for engaging a tool with said part to` rotate the same.

3'.. A. rlock-bolt comprising a' holty a camfaced washer adapted to rest on the end of thebolt, and'. means for enga-ging the washer to the bolt to prevent its rotation: on: the end thereof, in combination with a Coperatingf part of a diameter corresponding to that ofthe-bolt and similarly screw-threaded, sa-idf part being providcdi with a caur fa ce formed tocopera-t'el withl tliat of the washer, and means fer engaging a: tool with said part to rotate the same.

4:; A lock-bolt' comprising a` screw-threadedfbolt, a Washer provided` with a cam face adapted to rest onthe end ofthe bolt and means for preventing the rotation of the similarly screw-threaded, provided With a eam face formed to engage with and oop erate with the cam of the Washer, and means for temporarily engaging the Washer and said cooperating part to prevent the rota tion of the latter when the nut is removed from the bolt.

5. A look-bolt provided with a cam face on its free end7 in combination with a follower extension of said bolt, provided with a corresponding cam face, and means for temporarily looking the two together While screwing a nut thereon or removing the same therefrom.

6. A look bolt comprising a bolt provided with a cam face on its end, in combination with a follower provided with a eoperating cam face, one of said parts provided with a 'guiding projection, and the other with an aperture arranged to loosely receive the same.

7. A lock bolt comprising a bolt provided With a oam face on its end, in combination With a follower provided With a coperating cam face, one of said parte provided With a guiding projection, and the other with an aperture arranged to loosely reoeive the same, and means for temporarily looking the parte together as desired. y

In testimony whereof, I have hereunto signed my name in the presence of two sul scribing Witnesses.

EMIL C. ANDERSON. Witnesses:

S. J. ODAY,r GHAs. L. SMELT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, ZD. C. 

